Introduction: The Versioning Enigma For developers new to the Embarcadero ecosystem, the term “Delphi 2017 R3” can be puzzling. Officially, there is no standalone product named Delphi 2017 . Instead, Embarcadero’s release named Delphi 10.2 Tokyo was the version that shipped in March 2017 . The “R3” suffix—short for Release 3 —refers to the third update (or service pack) for that specific version.

| Feature | Delphi 2017 R3 | Delphi 12 Athens | |---------|----------------|------------------| | | Basic (Win10 SDK) | Full (Win11 SDK, dark title bars, rounded corners) | | macOS ARM (M1/M2) | No (Intel only) | Native macOS ARM64 | | Linux 64-bit | Yes (experimental) | Full production (including GUI apps) | | Inline variables | No | Yes | | Custom managed records | No | Yes | | Android API level | Up to API 26 (Android 8) | API 33+ (Android 13/14) | | iOS version | Up to iOS 11 | iOS 16/17 | | Language syntax | Classic Pascal (no [Result] attribute, no for..in with dictionaries directly) | Modern Pascal with [Disable] , [Unsafe] , volatile | | IDE memory footprint | ~500 MB | ~1.2 GB (but with faster indexing) | | Community support | Declining (mostly StackOverflow archives) | Active (Embarcadero forums, YouTube, blogs) |

Thus, when someone says they are almost always referring to Delphi 10.2 Tokyo – Update 3 (also known as version 10.2.3). This update was released in December 2017 and represented the most stable, polished iteration of the Tokyo release cycle.